The C-Tran Board of Directors indicated Tuesday it wants to act sooner than later on a long-awaited decision: Who should vote on this year’s planned election to pay for light rail?The question of who votes — either C-Tran’s entire taxing district or a smaller subdistrict such as Vancouver and its urban growth boundary — now could be resolved as soon as April. That’s sooner than earlier time lines had indicated, and would end months of uncertainty as the agency moves toward a November sales tax election.“It would be good to get some certainty,” said Clark County Commissioner Steve Stuart, one of nine C-Tran board members. “It’s time.”This November’s sales tax vote would pay for the operation and maintenance of two new high-capacity transit systems in Vancouver — a proposed bus rapid transit line on the city’s Fourth Plain corridor, and Vancouver’s share of a light rail extension planned as part of the $3.5 billion Columbia River Crossing. But C-Tran leaders have wrestled with whether smaller Clark County cities should help foot the bill for running new systems in Vancouver.If C-Tran decides to include its entire district in the vote, the proposed salestax increase would likely be 0.1 percentage point. If it’s Vancouver only, it would likely have to be 0.2 percentage point to collect enough revenue.Stuart initially said Tuesday he’d like to see the matter settled during the board’s next meeting in March, when a discussion on the issue is already planned. But other members said they’d prefer more time to put the question to their respective city councils after that meeting.